Degree of hull?

Discussion in 'Boating' started by last chance, Dec 22, 2007.

  1. last chance

    last chance New Member

    Messages:
    56
    State:
    Louisiana
    I've got a 2072 seaark bayfisher mvt and am trying to determin if it's 3 or 15 degree hull. Is it measured at the bow or stern of the boat? Thanks for any input you may have. Mike
     
  2. Mark J

    Mark J New Member

    Messages:
    9,407
    State:
    Four Oaks, NC
    You are talking about deadrise.
    Deadrise can be different the whole length of the boat.
    Like a lobster boat may have a 50 degree entry deadrise and a 6 degree stern deadrise.

    Get a protractor. A 15 degree deadrise is a pretty deep vee.
    3 degree is going to darn near be a flat bottom boat.
     

  3. last chance

    last chance New Member

    Messages:
    56
    State:
    Louisiana
    I've put a protractor on it already and determind it to be 15 degrees on the front vee but tapers out the rest of the bottom to be allmost flat. Would this then be considered to be a 3 degree hull ? Thanks for the reply. Mike C.
     
  4. Mark J

    Mark J New Member

    Messages:
    9,407
    State:
    Four Oaks, NC
    In technical terms its a progressive hull. Most hulls with a vee in them are.
    Having said that most folks thinking about deadrise think only in terms of the stern.
    Therefore by those standards of what most people think about deadrise you have a 3 degree deadrise.
    Its just like most people think the "ride" has to do with dearise at the stern.
    The bow of the boat encounters water and waves before the stern.


    To show you how thats not the right thinking go to Jarrett Bay boats web site and look at those behemoths flipped upside down.
    Those boats do 40 knots in 6' waves with darn near a flat bottom at the stern. The bow however has a radical deadrise.

    The more deadrise you have at the stern the less stable it is at rest. They rock. When you get up into the 21-24 degree stern deadrise hull they'll rock violently at rest in a wave enviroment like the ocean.

    The higher the deadrise at the stern the more horsepower is required.
    This how you can take a 20x8 foot flat bottomed hull built light , put a 25 horse on it and run 30 MPH.
    A 20 foot hull with a 18 degree deadrise might take a 150 or more.
     
  5. illinois_angler

    illinois_angler Member

    Messages:
    151
    State:
    IL
    You have a 3 degree hull. The MV is a modified V hull. The 15 degree hull is a big difference in ride quality.
     
  6. last chance

    last chance New Member

    Messages:
    56
    State:
    Louisiana
    Thanks for all the input fellas. Mike C.